minocycline and tazarotene

To evaluate the ability of either oral minocycline, topical tazarotene or both, to reduce or prevent cetuximab-related acneiform rash when administered starting on day 1 of cetuximab therapy.. Metastatic colorectal cancer patients preparing to initiate cetuximab were randomly assigned to receive daily oral minocycline or placebo, and to receive topical tazarotene application to either left or right side of the face. Both therapies were administered for 8 weeks.. Forty-eight eligible patients were randomly assigned to minocycline (n = 24) or placebo (n = 24). Total facial lesion counts were significantly lower in patients receiving minocycline at weeks 1 through 4. At week 4, a lower proportion of patients in the minocycline arm reported moderate to severe itch than in the placebo arm (20% v 50%, P = .05). Facial photographs, obtained at week 4, were reviewed for rash global severity. Patients in the minocycline arm trended toward lower frequency of moderate to severe rash than patients receiving placebo (20% v 42%, P = .13). The differences in total facial lesion counts and subjectively assessed itch were diminished by week 8. Cetuximab treatment was interrupted because of grade 3 skin rash in four patients in the placebo arm, and none in the minocycline arm. There was no observed clinical benefit to tazarotene application. Tazarotene treatment was associated with significant irritation, causing its discontinuation in one third of patients.. Prophylaxis with oral minocycline may be useful in decreasing the severity of the acneiform rash during the first month of cetuximab treatment. Topical tazarotene is not recommended for management of cetuximab-related rash.

Topics: Acneiform Eruptions; Administration, Oral; Administration, Topical; Adult; Aged; Aged, 80 and over; Antibodies, Monoclonal; Antibodies, Monoclonal, Humanized; Antineoplastic Agents; Cetuximab; Colorectal Neoplasms; Dermatologic Agents; Double-Blind Method; ErbB Receptors; Female; Humans; Male; Middle Aged; Minocycline; Nicotinic Acids; Placebos

To evaluate the efficacy of 3 maintenance regimens (topical tazarotene, oral minocycline hydrochloride, or both) in sustaining improvement in acne.. Multicenter, open-label treatment phase followed by double-blind, randomized, parallel-group maintenance phase.. Ambulatory patients in research or referral centers.. Volunteer sample of 189 patients with moderately severe to severe acne vulgaris (110 entered maintenance phase, 90 completed, and 2 discontinued because of adverse events).. All patients were treated with 0.1% tazarotene gel (each evening) and a 100-mg capsule (twice daily) of minocycline hydrochloride for up to 12 weeks. Patients with 75% or greater global improvement at week 12 were randomly assigned to 12 weeks of maintenance therapy with tazarotene gel plus placebo capsules, vehicle gel plus minocycline capsules, or tazarotene gel plus minocycline capsules.. Overall disease severity, global improvement, and lesion counts.. All regimens were effective in sustaining improvements in acne. After 12 weeks of maintenance therapy, the mean reductions from baseline in noninflammatory and inflammatory lesion count, respectively, were 60% and 54% with tazarotene, 52% and 66% with minocycline, and 64% and 66% with tazarotene plus minocycline. At week 24, more than 80% of patients in each group had maintained a 50% or greater global improvement from baseline, and more than 50% had maintained a 75% or greater global improvement.. A high percentage of patients with moderately severe to severe acne can maintain improvement in their condition with topical retinoid monotherapy. Maintenance with combination tazarotene and minocycline therapy showed a trend for greater efficacy but no statistical significance vs tazarotene alone. Topical retinoid monotherapy should be considered for maintenance to help minimize antibiotic exposure.

Topics: Acne Vulgaris; Administration, Oral; Adult; Anti-Bacterial Agents; Dermatologic Agents; Double-Blind Method; Drug Administration Schedule; Female; Humans; Male; Minocycline; Nicotinic Acids; Severity of Illness Index; Treatment Outcome; United States

Understanding a drug candidate's pharmacokinetic (PK) parameters is a challenging but essential aspect of drug development. Investigating the penetration and distribution of a topical drug's active pharmaceutical ingredient (API) allows for evaluating drug delivery and efficacy, which is necessary to ensure drug viability. A topical gel (BPX-05) was recently developed to treat moderate to severe acne vulgaris by directly delivering the combination of the topical antibiotic minocycline and the retinoid tazarotene to the pilosebaceous unit of the dermis. In order to evaluate the uptake of APIs within human facial skin and confirm accurate drug delivery, a selective visualization method to monitor and quantify local drug distributions within the skin was developed. This approach uses fluorescence lifetime imaging microscopy (FLIM) paired with a multicomponent phasor analysis algorithm to visualize drug localization. As minocycline and tazarotene have distinct fluorescence lifetimes from the lifetime of the skin's autofluorescence, these two APIs are viable targets for distinct visualization via FLIM. Here, we demonstrate that the analysis of the resulting FLIM output can be used to determine local distributions of minocycline and tazarotene within the skin. This approach is generalizable and can be applied to many multicomponent fluorescence lifetime imaging targets that require cellular resolution and molecular specificity.

Topics: Administration, Topical; Algorithms; Dermatologic Agents; Drug Combinations; Face; Fluorescence; Gels; Humans; Image Processing, Computer-Assisted; Microscopy, Fluorescence; Minocycline; Molecular Imaging; Nicotinic Acids; Skin; Spectrometry, Fluorescence

Confluent and reticulate papillomatosis (CRP) (also known as Gougerot-Carteaud syndrome) is a rare disorder that usually presents sporadically, with onset typically occurring in young .adulthood. We present 2 cases of CRP with typical clinical manifestations of scaly, dull, brownish, confluent and reticulate macules and patches. On examination using a potassium hydroxide (KOH) preparation and Periodic acid-Schiff (PAS) stain, both patients' lesions were negative for fungal elements; in patient 2, bacteria colonies accumulated in follicular orifices without perifollicular inflammation in the dermis. Both patients responded well to treatment with oral minocycline and topical tazarotene and showed clearance of CRP lesions at 12- and 8-month follow-up, respectively.

Topics: Administration, Cutaneous; Administration, Oral; Adult; Anti-Bacterial Agents; Dermatologic Agents; Female; Follow-Up Studies; Humans; Male; Minocycline; Nicotinic Acids; Papilloma; Skin Neoplasms; Treatment Outcome; Young Adult

This article reports on recent studies and case reports that evaluated the stability, tolerability, and efficacy of clindamycin 1%-benzoyl peroxide 5% tube gel in combination with topical retinoids and oral antibiotics. Overall, these combinations appeared to be well-tolerated, effective, and, as reported in the case studies, adaptable to common clinical practice.

Topics: Acne Vulgaris; Adapalene; Administration, Cutaneous; Administration, Oral; Adolescent; Adult; Anti-Bacterial Agents; Benzoyl Peroxide; Clindamycin; Dermatologic Agents; Drug Combinations; Female; Gels; Humans; Keratolytic Agents; Male; Minocycline; Naphthalenes; Nicotinic Acids; Retinoids; Treatment Outcome; Tretinoin